CN112449421B

CN112449421B - Communication method and device in closed-loop application scene

Info

Publication number: CN112449421B
Application number: CN201910804715.5A
Authority: CN
Inventors: 胡丹; 官磊; 李胜钰; 马蕊香
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2024-04-12
Anticipated expiration: 2039-08-28
Also published as: WO2021036339A1; CN112449421A

Abstract

The application provides a communication method and device in a closed-loop application scene, which are used for solving the problems of high signaling overhead, high communication time delay and incapability of guaranteeing service quality caused by the application of the prior art to closed-loop data transmission. In the present application: the terminal equipment receives downlink data on the first time-frequency resource, determines target uplink configuration authorization associated with the first time-frequency resource from a plurality of configured uplink configuration authorizations, and uses the associated target uplink configuration authorization to communicate with the network equipment. Further, when the decoding of the downlink data is correct, the uplink data is directly triggered to be sent in a configuration authorization mode in the target uplink configuration authorization, and ACK is not fed back any more. The HARQ feedback information is implicitly indicated by using the configuration grant to carry out uplink data transmission, so that the signaling overhead of HARQ feedback can be reduced, the communication delay is reduced, and the service quality is ensured.

Description

Communication method and device in closed-loop application scene

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communication method and apparatus in a closed loop application scenario.

Background

The international telecommunications union (international telecommunication union, ITU) defines enhanced mobile bandwidth (Enhanced Mobile Broadband, eMBB), high reliability low latency communication (URLLC) as three major typical services of the fifth generation (5th Generation,5G) mobile communication system.

Wherein, URLLC is one of three typical services of 5G, and main application scenarios include: in closed loop application, how network equipment and terminal equipment communicate is a current research hot spot.

Disclosure of Invention

The application provides a communication method and device in a closed-loop application scene, which are used for solving the problems of high signaling overhead, high communication time delay and incapability of guaranteeing service quality caused by the application of the prior art to the closed-loop application scene.

In a first aspect, the present application provides a communication method, where the execution body of the method may be a terminal device, or may be a chip applied in the terminal device. The following describes an example in which the execution subject is a terminal device. The terminal device may receive the first configuration information and the second configuration information from the network device. The first configuration information is used for configuring downlink semi-persistent scheduling, and the second configuration information is used for configuring N uplink configuration grants. The terminal equipment determines a first time-frequency resource according to the resources of the second downlink semi-persistent scheduling, and receives first downlink data from the network equipment on the first time-frequency resource, wherein the first downlink data can be transmitted in a downlink semi-persistent scheduling mode; and the terminal equipment determines a target uplink configuration grant associated with the first time-frequency resource in N uplink configuration grants configured by the second configuration information, determines a second time-frequency resource according to the target uplink configuration grant, and communicates with the network equipment on the second time-frequency resource. In the above manner, when the terminal device communicates with the network device, the downlink data is transmitted by using the downlink semi-persistent scheduling resource, and the uplink data is transmitted by using the target uplink configuration grant determined from the plurality of uplink configuration grants, so that uplink and downlink closed-loop data transmission can be effectively realized without additional scheduling signaling.

In one possible design, the first configuration information includes a first identifier, where the first identifier may be used to identify the downlink semi-persistent scheduling, and the terminal device may determine, in the second configuration information, a second identifier that meets a first preset rule with the first identifier. And the terminal equipment determines the uplink configuration authorization corresponding to the second identifier as the target uplink configuration authorization. According to the mode, the terminal equipment can determine the target uplink configuration authorization with association relation with the DL SPS according to the configuration identification, the process of sending uplink scheduling signaling is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

In one possible design, the first configuration information includes a first transmission period of downlink data, and the terminal device determines, in the second configuration information, a second transmission period of uplink data that meets a second preset rule with the first transmission period; and the terminal equipment determines that the uplink configuration authorization corresponding to the second transmission period is the target uplink configuration authorization. Since in the prior art, the first configuration information already includes a transmission period of downlink data, and the second configuration information already includes a transmission period of uplink data. It can be seen that, in the present design, the terminal device can determine the target uplink configuration grant without any improvement on the first configuration information and the second configuration information in the prior art. Has better compatibility with the prior art and is easy to realize.

In one possible design, the first configuration information includes a third identifier, where the third identifier is used to identify the target uplink configuration grant. And the terminal equipment can determine the target uplink configuration authorization associated with the first time-frequency resource according to the third identifier.

In one possible design, the first configuration information includes a first time domain offset. The terminal device may determine a second time unit based on the first time unit and the first time domain offset. And the terminal equipment determines that the uplink configuration authorization corresponding to the second time unit is the target uplink configuration authorization. The first time unit is a time unit corresponding to the first time-frequency resource, and the second time unit is a time unit corresponding to the second time-frequency resource.

In one possible design, the first configuration information includes a first frequency domain offset. The terminal equipment determines a second frequency domain unit according to the first frequency domain unit and the first frequency domain offset; and the terminal equipment determines that the uplink configuration authorization corresponding to the second frequency domain unit is the target uplink configuration authorization. The first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource.

In one possible design, the first configuration information includes a first time domain offset and a first frequency domain offset. The terminal equipment determines a second time unit according to the first time unit and the first time domain offset; the terminal equipment determines a second frequency domain unit according to the first frequency domain unit and the first frequency domain offset; the first time unit is a time unit corresponding to the first time-frequency resource, the second time unit is a time unit corresponding to the second time-frequency resource, the first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource; and the terminal equipment determines that the uplink configuration authorization corresponding to the second time-frequency resource is the target uplink configuration authorization.

In one possible design, when the first downlink data is decoded correctly, the terminal device sends the first uplink data to the network device on the second time-frequency resource, and the network device does not send the positive information of the first downlink data any more. When the first downlink data is decoded in error, the terminal device does not send negative acknowledgement of the first uplink data and the first downlink data to the network device. The first uplink data is transmitted in an uplink configuration authorization mode. In the mode, the terminal equipment uses the configuration authorization to carry out uplink data transmission to hide the indication HARQ feedback information, so that the signaling overhead of HARQ feedback can be reduced, the communication time delay is reduced, and the service quality is ensured.

In a second aspect, the present application provides a communication method, where the method may be executed by a network device or a chip applied in the network device. The following describes an example in which the execution subject is a network device. The network device sends the first configuration information and the second configuration information to the terminal device. The first configuration information may be used to configure downlink semi-persistent scheduling, and the second configuration information is used to configure N uplink configuration grants, where N is an integer greater than 1. And the network equipment determines a first time-frequency resource according to the downlink semi-persistent scheduling resource, and transmits first downlink data on the first time-frequency resource, wherein the first downlink data is transmitted in a downlink semi-persistent scheduling mode. And the network equipment determines the target uplink configuration authorization associated with the first time-frequency resource from N uplink configuration authorizations configured by the second configuration information. And the network equipment determines a second time-frequency resource according to the target uplink configuration authorization, and communicates with the terminal equipment on the second time-frequency resource. In the above manner, the network device sends the first downlink data on the first time-frequency resource, determines the target uplink configuration authorization associated with the first time-frequency resource from the configured plurality of uplink configuration authorizations, and uses the associated target uplink configuration authorization to communicate with the network device. In the uplink communication process, no additional scheduling is needed by network equipment, the scheduling signaling overhead is reduced, the time delay of communication is reduced, and the service quality is ensured.

In one possible design, the first configuration information includes a first identifier, and the network device determines a second identifier that meets a first preset rule with the first identifier; and the network equipment determines the uplink configuration authorization corresponding to the second identifier as the target uplink configuration authorization.

In one possible design, the first configuration information includes a first transmission period of downlink data, and the network device determines the second transmission period that meets a second preset rule with the first transmission period; and the network equipment determines that the uplink configuration authorization corresponding to the second transmission period is the target uplink configuration authorization.

In one possible design, the first configuration information includes a third identifier, where the third identifier is used to identify the target uplink configuration grant, and the network device determines, according to the third identifier, the target uplink configuration grant associated with the first time-frequency resource.

In one possible design, the first configuration information includes a first time domain offset, and the network device determines a second time unit according to the first time unit and the first time domain offset; and the network equipment determines the uplink configuration authorization corresponding to the second time unit as the target uplink configuration authorization. The first time unit is a time unit corresponding to the first time-frequency resource, and the second time unit is a time unit corresponding to the second time-frequency resource;

In one possible design, the first configuration information includes a first frequency domain offset, and the network device determines a second frequency domain unit according to the first frequency domain unit and the first frequency domain offset; and the network equipment determines that the uplink configuration authorization corresponding to the second frequency domain unit is the target uplink configuration authorization. The first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource.

In one possible design, the first configuration information includes a first time domain offset and a first frequency domain offset, and the network device determines a second time unit according to the first time unit and the first time domain offset; the network equipment determines a second frequency domain unit according to the first frequency domain unit and the first frequency domain offset; the first time unit is a time unit corresponding to the first time-frequency resource, the second time unit is a time unit corresponding to the second time-frequency resource, the first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource; and the network equipment determines that the uplink configuration grant corresponding to the second time-frequency resource is the target uplink configuration grant.

In one possible design, the network device may receive, on the second time-frequency resource, first uplink data from the terminal device, where the first uplink data is transmitted in an uplink configuration grant manner.

In one possible design, when the first uplink data is successfully detected, the network device determines that the first downlink data was successfully decoded by the terminal device; and/or when the first uplink data is not successfully detected, the network equipment determines that the first downlink data is not successfully decoded by the terminal equipment. In the above manner, if the network device successfully detects the first uplink data, the method corresponds to that the network device receives ACK feedback of the first downlink data. If the network device does not successfully detect the first uplink data, the network device is equivalent to receiving NACK feedback of the first downlink data. Therefore, the first uplink data can implicitly indicate the HARQ feedback of the first downlink data, so that the HARQ signaling overhead is saved, the transmission delay is reduced, and the communication quality is ensured.

In a third aspect, a communication device is provided, and advantageous effects may be seen from the description of the first aspect, which is not repeated here. The communication device has the functionality to implement the actions in the method example of the first aspect described above. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above. In one possible design, the communication device includes: the receiving and transmitting module is used for receiving first configuration information and second configuration information from the network equipment, wherein the first configuration information is used for configuring downlink semi-persistent scheduling, the second configuration information is used for configuring N uplink configuration authorizations, and N is an integer greater than 1; the transceiver module is further configured to receive first downlink data on a first time-frequency resource, where the first downlink data is transmitted using a downlink semi-persistent scheduling manner, and the first time-frequency resource is determined according to the downlink semi-persistent scheduling resource; a processing module, configured to determine a target uplink configuration grant associated with the first time-frequency resource; the processing module is further configured to communicate with the network device on a second time-frequency resource, where the second time-frequency resource is a time-frequency resource determined according to the target uplink configuration grant. These modules may perform the corresponding functions in the method examples of the first aspect, which are specifically referred to in the detailed description of the method examples and are not described herein.

In a fourth aspect, a communication device is provided, and advantageous effects may be seen from the description of the second aspect and are not repeated here. The communication device has the functionality to implement the behavior in the method example of the second aspect described above. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above. In one possible design, the communication device includes: the system comprises a receiving and transmitting module, a transmitting module and a receiving module, wherein the receiving and transmitting module is used for transmitting first configuration information and second configuration information to terminal equipment, the first configuration information is used for configuring downlink semi-persistent scheduling, the second configuration information is used for configuring N uplink configuration authorizations, and N is an integer larger than 1; the transceiver module is further configured to send first downlink data on a first time-frequency resource, where the first downlink data is transmitted in a downlink semi-persistent scheduling manner, and the first time-frequency resource is determined according to the first configuration information; a processing module, configured to determine a target uplink configuration grant associated with the first time-frequency resource, where the target uplink configuration grant is one of the N uplink configuration grants; the processing module is further configured to communicate with the terminal device on a second time-frequency resource, where the second time-frequency resource is a time-frequency resource determined according to the target uplink configuration grant. These modules may perform the corresponding functions in the method examples of the second aspect, which are specifically referred to in the method examples and are not described herein.

In a fifth aspect, a communication device is provided, where the communication device may be a terminal device in an embodiment of the method described above, or a chip provided in the terminal device. The communication device comprises a communication interface and a processor, and optionally a memory. The memory is used for storing a computer program or instructions, and the processor is coupled with the memory and the communication interface, when the processor executes the computer program or instructions, the communication device executes the method executed by the terminal device in the method embodiment.

In a sixth aspect, a communication apparatus is provided, where the communication apparatus may be a network device in the above method embodiment, or a chip provided in the network device. The communication device comprises a communication interface and a processor, and optionally a memory. The memory is used for storing a computer program or instructions, and the processor is coupled with the memory and the communication interface, when the processor executes the computer program or instructions, the communication device executes the method executed by the network device in the method embodiment.

In a seventh aspect, there is provided a computer program product comprising: computer program code which, when executed, causes the method performed by the terminal device in the above aspects to be performed.

In an eighth aspect, there is provided a computer program product comprising: computer program code which, when executed, causes the method performed by the network device in the above aspects to be performed.

In a ninth aspect, the present application provides a chip system, where the chip system includes a processor, and the processor is configured to implement a function of a terminal device in the methods in the above aspects. In one possible design, the chip system further includes a memory for holding program instructions and/or data. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a tenth aspect, the present application provides a chip system, where the chip system includes a processor, and the processor is configured to implement the functions of the network device in the methods of the above aspects. In one possible design, the chip system further includes a memory for holding program instructions and/or data. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In an eleventh aspect, the present application provides a computer readable storage medium storing a computer program which, when executed, implements the method performed by the terminal device in the above aspects.

In a twelfth aspect, the present application provides a computer readable storage medium storing a computer program which, when executed, implements the method performed by the network device in the above aspects.

Drawings

FIG. 1 is a schematic diagram of a possible communication architecture according to an embodiment of the present application;

FIG. 2 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

FIG. 3 is a schematic diagram of one possible time cell in an embodiment of the present application;

FIG. 4 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

FIG. 5 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

FIG. 6 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

FIG. 7 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

FIG. 8 is a schematic diagram of one possible communication method in a closed loop communication scenario according to an embodiment of the present application;

fig. 9 is a schematic diagram of a communication device 900 according to an embodiment of the present application;

fig. 10 is a schematic diagram of a communication device 1000 in an embodiment of the application.

Detailed Description

As shown in fig. 1, a schematic diagram of a possible network architecture, including a terminal device 110 and an access network device 120, applicable to an embodiment of the present application. Communication between terminal device 110 and access network device 120 may be via a Uu air interface, which may be understood as an interface (universal UE to network interface) between a general purpose terminal device and a network device. The Uu air interface transmission includes uplink transmission and downlink transmission.

For example, uplink transmission refers to terminal device 110 sending uplink information to access network device 120. The uplink information may include one or more of uplink data information, uplink control information, and Reference Signal (RS). The channel used for transmitting the uplink information is called an uplink channel, which may be a physical uplink shared channel (physical uplink shared channel, PUSCH) or a physical uplink control channel (physical uplink control channel, PUCCH). PUSCH is used to carry uplink data, which may also be referred to as uplink data information. The PUCCH is used to carry uplink control information (uplink control information, UCI) fed back by the terminal device. The UCI may include channel state information (channel state information, CSI), acknowledgement (ACK)/negative acknowledgement (negative acknowledgement, NACK), and the like.

For example, the downlink transmission refers to the access network device 120 sending downlink information to the terminal device 110. The downlink information may include one or more of downlink data information, downlink control information, and a downlink reference signal. The downlink reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS) or a phase tracking reference signal (phase tracking reference signal, PTRS). The channel used for transmitting the downlink information is called a downlink channel, which may be a physical downlink shared channel (physical downlink shared channel, PDSCH) or a physical downlink control channel (physical downlink control channel, PDCCH). The PDCCH is used for carrying downlink control information (downlink control information, DCI), and the PDSCH is used for carrying downlink data, which may also be referred to as downlink data information.

Optionally, in the network architecture shown in fig. 1, a core network device 130 may also be included. Wherein terminal device 110 may be connected to access network device 120 in a wireless manner, and access network device 120 may be connected to core network device 130 in a wired or wireless manner. Core network device 130 and access network device 120 may be separate, distinct physical devices, or core network device 130 and access network device 120 may be the same physical device with all/part of the logical functions of core network device 130 and access network device 120 integrated thereon.

It should be noted that, in the network architecture shown in fig. 1, the terminal device 110 may be fixed in location or movable, and is not limited thereto. Other network devices, such as a wireless relay device, a wireless backhaul device, etc., may also be included in the network architecture shown in fig. 1, without limitation. In the architecture shown in fig. 1, the number of terminal devices, access network devices, and core network devices is not limited.

The technical scheme in the embodiment of the application can be applied to various communication systems. Such as long term evolution (long term evolution, LTE) systems, fifth generation (5th generation,5G) mobile communication systems, and future mobile communication systems.

Based on the network architecture provided in fig. 1, a closed loop application scenario in IIoT is described below. The network device in the application scenario may be the access network device 120 in fig. 1, and the terminal device may be the terminal device 110 in fig. 1. As shown in fig. 2, the process of the closed loop application may include:

s200: the network device sends downlink data to the terminal device, and the downlink data can instruct the terminal device to perform corresponding processing. One possible industrial automation closed loop application scenario: the terminal device is a mechanical arm, and the downlink data indicates the mechanical arm to execute a specific command, for example, the angle of the mechanical arm is adjusted downwards by 5 degrees.

S201: and the terminal equipment performs corresponding processing according to the indication of the downlink data. Still further to the above example, the terminal device is a mechanical arm, the downlink data indicates that the angle of the mechanical arm is adjusted downward by 5 degrees, and the mechanical arm may perform angle adjustment according to the indication of the downlink data. In practical application, the actual adjustment angle of the mechanical arm may be greater than 5 degrees, or may be less than 5 degrees, or may be exactly 5 degrees due to the processing error of the mechanical arm.

S202: and the terminal equipment sends uplink data to the network equipment, wherein the uplink data carries information such as an actual processing result of the terminal equipment.

As is clear from the description in S201, the terminal device may perform corresponding processing according to the instruction of the downlink data, so as to obtain an actual processing result. Further, in S202, the terminal device may generate uplink data according to the actual processing result. For example, the uplink data may carry the actual processing result. And the terminal equipment sends the uplink data to the network equipment. Still using the example in S202 above, the actual processing result of the mechanical arm is to adjust the angle downward by M degrees. The M degree can be carried in uplink data and sent to the network device.

S203: the network device compares the actual processing result of the terminal device with the expected processing result. If the two are the same, the process is ended. If the two are different, the process returns to S200 to repeat the above process.

In this embodiment of the present application, after receiving the uplink data, the network device may obtain an actual processing result of the terminal device carried in the uplink data. The network device then compares the actual processing result of the terminal device with the desired processing result. If the two are the same, the current processing of the terminal equipment can be considered to meet the condition, and the flow is ended. If the two are different, the current processing of the terminal equipment can be considered to not meet the condition, the downlink data is continuously sent, and the terminal equipment is instructed to perform corresponding processing again. It should be noted that, the expected processing result may specifically be a processing result of the terminal device when the network device sends the downlink data to the terminal device. For instance, still using the above example, the network device sends downstream data to the robotic arm indicating that the angle of the robotic arm is adjusted 5 degrees downward, then the desired processing by the network device may be considered to be adjusted 5 degrees downward.

Still using the example above, the network device sends downstream data to the robotic arm that may indicate that the angle of the robotic arm is adjusted 5 degrees downward. After receiving the downlink data, the terminal equipment can perform angle adjustment according to the indication of the downlink data. Due to processing errors and the like, there may be a case where the network device instructs to adjust the angle of the robot arm downward by 5 degrees, but the robot arm is actually adjusted downward by only 4 degrees. At this time, the robotic arm may send uplink data to the network device, which may indicate that the robotic arm is actually only adjusted by 4 degrees. After the network device receives the uplink data, the processing result of the mechanical arm which is adjusted by 4 degrees and the processing result which is expected to be adjusted by 5 degrees can be compared, and if the processing result and the processing result are not matched, the network device continues to send downlink data to the mechanical arm, and the downlink data indicates that the angle of the mechanical arm is adjusted by 1 degree downwards again. Similar to the above procedure, if the network device finds that the actual processing result of the mechanical arm is adjusted downward by 1 degree (accumulated by 5 degrees), which matches the desired processing result, the above procedure is ended. Otherwise, the network equipment continues to send downlink data, and instructs the mechanical arm to perform angle adjustment again.

As can be seen from the description of the flow of fig. 2, in the closed-loop application scenario, the downlink data triggers the transmission of the corresponding uplink data. In an example, downlink data is transmitted based on semi-persistent scheduling (SPS) mode, and uplink data is transmitted based on scheduling (GB) mode. When uplink data is transmitted based on a scheduling mode, the network equipment firstly transmits a PDCCH for uplink scheduling to the terminal equipment, and the terminal equipment transmits the uplink data according to the scheduling of the PDCCH after receiving the PDCCH for uplink scheduling. The interactive flow of the whole closed loop application is complex, the signaling overhead is large, and the service time delay cannot be ensured.

Based on the above, the present application provides a communication method, which is based on the principle that: and the transmission mode of the uplink data is changed from the transmission mode based on the scheduling mode to the transmission mode without the scheduling mode. In the scheduling-free transmission mode, the terminal equipment can transmit uplink data according to the configuration information, and additional scheduling of the network equipment is not needed. Thus reducing the signaling overhead of the whole closed loop application and ensuring the service time delay.

The following description is given of some terms or terminology used in this application as part of the summary of the invention.

1. Terminal equipment

A terminal device may be simply referred to as a terminal, also referred to as a User Equipment (UE), and is a device having a wireless transceiving function. The terminal device may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on an aircraft, drone, balloon, satellite, etc.). The terminal equipment can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a virtual reality terminal equipment, an augmented reality terminal equipment, a wireless terminal equipment in industrial control, a wireless terminal equipment in unmanned aerial vehicle, a wireless terminal equipment in remote medical treatment, a wireless terminal equipment in a smart grid, a wireless terminal equipment in transportation safety, a wireless terminal equipment in a smart city and a wireless terminal equipment in a smart home. The terminal device may also be fixed or mobile. The embodiments of the present application are not limited in this regard.

In the embodiment of the present application, the device for implementing the function of the terminal may be a terminal device; or a device, such as a chip system, capable of supporting the terminal device to realize the function, which may be installed in the terminal device. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiments of the present application, the device for implementing the function of the terminal device is an example of the terminal device, and the technical solution provided in the embodiments of the present application is described.

2. Network equipment

The network device may be an access network device, which may also be referred to as a radio access network (radio access network, RAN) device, which is a device that provides wireless communication functionality for the terminal device. Access network devices include, for example, but are not limited to: a next generation base station (gNB) in 5G, an evolved node B (eNB), a baseband unit (BBU), a transmit-receive point (transmitting and receiving point, TRP), a transmit point (transmitting point, TP), a base station in a future mobile communication system, an access point in a WiFi system, or the like. The access network device may also be a radio controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an in-vehicle device, a network device in a PLMN network of future evolution, etc.

The terminal device may communicate with multiple access network devices of different technologies, for example, the terminal device may communicate with an access network device supporting long term evolution (long term evolution, LTE), may communicate with an access network device supporting 5G, and may also communicate with an access network device supporting LTE and an access network device supporting 5G simultaneously. The embodiments of the present application are not limited.

In the embodiment of the present application, the means for implementing the function of the network device may be the network device; or may be a device, such as a system-on-a-chip, capable of supporting the network device to perform this function, which may be installed in the network device. In the technical solution provided in the embodiments of the present application, the device for implementing the function of the network device is exemplified by the network device, and the technical solution provided in the embodiments of the present application is described.

3. Downlink (DL) semi-persistent scheduling (semi-persistent scheduling, SPS)

DL SPS may be considered a combination of scheduling-based and scheduling-free downlink transmissions. The specific process can be as follows: when the network equipment performs downlink transmission for the first time, the network equipment firstly sends a PDCCH for scheduling the terminal equipment to the terminal equipment, and the terminal equipment receives downlink data according to the scheduling of the PDCCH. Subsequently, the network device may send the downlink data according to the preconfigured period P, and correspondingly, the terminal device receives the downlink data according to the preconfigured period P. The network device can realize multiple downlink data transmission by sending one PDCCH, and the signaling overhead is reduced.

4. Uplink (UL) Configuration Grant (CG)

The uplink configuration authorization means that the uplink transmission of the terminal equipment does not need the scheduling of the network equipment, and the terminal equipment performs the uplink transmission according to the configuration information. The uplink configuration grants transmission, also called Grant Free (GF) or scheduling-free (scheduling-free) uplink transmission. The uplink configuration grant includes two types, namely, an uplink configuration grant of type 1 and an uplink configuration grant of type 2. The difference between the two is that all parameters in the uplink configuration authorization of the type 1 are preconfigured by the network equipment, so that when the uplink configuration authorization of the type 1 is used for sending the uplink service data, the terminal equipment can directly utilize the parameters configured by the network equipment without additional scheduling information. And when the terminal equipment uses the uplink configuration authorization of the type 2 to send uplink service data, the terminal equipment needs to additionally receive a touch transmission message to transmit the uplink service data.

For type 1 and type 2 upstream configuration grants, one or more of the following information may be preconfigured by high-level parameters: frequency hopping scheme, demodulation reference signal (demodulation reference signal, DMRS) configuration, modulation and coding scheme (modulation and coding scheme, MCS) table selection, frequency domain resource allocation scheme selection, PUSCH RBG size configuration selection, power control loop selection, open loop power control parameters (including target signal-to-noise ratio and path loss compensation factors, etc.), automatic retransmission request (hybrid automatic repeat request, HARQ) process number, number of retransmissions, redundancy version sequence, period, etc.

Further, for the uplink configuration grant of the type 1, the configuration information may further include, in addition to one or more of the above information: time-frequency resource allocation, time-domain offset, antenna ports, precoding, number of layers, sounding reference signal (sounding reference signal, SRS) resource indication, modulation order, target code rate, transport block size, frequency hopping offset, path loss reference index, beta-offset indication, etc.

For the uplink configuration authorization of type 2, the resource allocation obeys the configuration of the higher-layer parameters, and in addition, the terminal equipment can perform the scheduling-free transmission only after receiving the trigger information.

5. Time cell

The time unit is a time domain unit for data transmission, and may include a radio frame (radio frame), a subframe (subframe), a slot (slot), a minislot (mini-slot), and a time domain symbol (symbol) and the like. In a 5G New Radio (NR), one radio frame may include 10 subframes, one subframe may include one or more slots, and a specific subframe includes how many slots are related to a subcarrier spacing.

Frame structure parameters (numerology) may include subcarrier spacing and/or Cyclic Prefix (CP) type, etc. The CP type may also be referred to as CP length, or CP for short. The CP type may be an extended (extended) CP or a normal (normal) CP. The extended CP next slot may include 12 time domain symbols and the normal CP next slot may include 14 time domain symbols. The time domain symbols may be simply referred to as symbols. The time domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols or discrete fourier transform spread based orthogonal frequency division multiplexing (discrete fourier transform spread orthogonal frequency division multiplexing, DFT-s-OFDM) symbols. In the embodiment of the present application, the time domain symbol is an OFDM symbol as an example.

As shown in table 1, in the NR system, 5 frame structure parameters, numbered 0 to 4, respectively, can be supported. For example, frame structure parameters numbered 2 are: the subcarrier spacing is 60khz, and the CP is a normal CP or an extended CP.

Frame structure parameters (numerologies) supported in table 1

There may be different slot lengths for different subcarrier spacings. For example, when the subcarrier spacing is 15kHz, one slot is 1 millisecond (ms); at a subcarrier spacing of 30kHz, one slot is 0.5ms. A minislot, also called mini-slot, may be a smaller unit than a slot, and a minislot may include one or more symbols. For example, a minislot may include 2 symbols, 4 symbols, 7 symbols, or the like. One slot may include one or more minislots.

As shown in fig. 3, taking a 15kHz subcarrier spacing as an example, 1 radio frame may last 10ms, each subframe may last 1ms,1 radio frame includes 10 subframes, each slot lasts 1ms, each subframe may include 1 slot, and each slot may include 14 symbols. Further, the micro slot may include 4 symbols, 2 symbols, 7 symbols, or the like.

6. Frequency domain unit

The frequency domain unit may include one or more Resource Blocks (RBs), resource elements (resources element, REs), resource block groups (resources block group, RBGs), or resource element groups (resource element group, REGs). By way of example, an RBG may include one or more RBs, such as 6; the RB may include one or more REs, such as 12; the REG may include one time domain symbol in the time domain and one RB in the frequency domain.

7. High layer signaling

The higher layer signaling may refer to signaling sent by a higher layer protocol layer, where the higher layer protocol is at least one protocol layer above the physical layer. For example, the higher layer protocol layer may include at least one of: a medium access control (medium access control, MAC) layer, a radio link control (radio link control, RLC) layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer, a radio resource control (radio resource control, RRC) layer, and a non-access layer (non access stratum, NAS).

In the embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a. b, c, a and b, a and c, b and c, or a and b and c, wherein a, b and c can be single or multiple.

As shown in fig. 4, the embodiment of the present application provides a flowchart of a communication method, which may be performed by a terminal device and a network device, or may be performed by a chip in the terminal device and a chip in the network device. The network device in fig. 4 may be the access network device 120 in fig. 1 described above, and the terminal device may be the terminal device 110 in fig. 1 described above. The method shown in fig. 4 may include the following operations.

S401: the network device sends first configuration information to the terminal device, wherein the first configuration information is used for configuring resources of the DL SPS. Correspondingly, the terminal equipment receives the first configuration information.

For example, the first configuration information may include one or more of a period K of DL SPS data transmission, an MCS table adopted by DL SPS, PUCCH resources for transmitting HARQ feedback information of DL SPS, or the number of HARQ processes of DL SPS.

S402: the network device sends second configuration information to the terminal device, wherein the second configuration information is used for configuring N uplink configuration authorizations, and N is an integer greater than 1. Correspondingly, the terminal equipment receives the second configuration information.

For example, in the embodiment of the present application, the second configuration information may include N pieces of configuration information, where each piece of configuration information in the N pieces of configuration information is used to configure one uplink configuration grant, that is, the N pieces of configuration information are used to configure N pieces of uplink configuration grants. Further, any one of the "N uplink configuration grants" may be an uplink configuration grant of type 1 or an uplink configuration grant of type 2.

One possible application scenario is that the network device may configure different upstream configuration grants for different types of traffic. For example, for longer period traffic of data generation, longer time interval configuration grants may be configured; for example, for a service with a shorter period of data generation, a configuration grant with a shorter time interval may be configured; for example, for traffic with larger data blocks, larger time-frequency resources may be configured; for example, for smaller data block traffic, smaller time-frequency resources may be configured.

S403: and the network equipment sends first downlink data to the terminal equipment on a first time-frequency resource, and the first downlink data is transmitted by using a DL SPS mode. Correspondingly, the terminal equipment receives the first downlink data on a first time-frequency resource. The first time-frequency resource is determined according to the resource of the downlink semi-persistent scheduling.

S404: the terminal device determines a target uplink configuration grant associated with the first time-frequency resource, wherein the target uplink configuration grant is one of N uplink configuration grants. The determining, by the terminal device, a target uplink configuration grant associated with the first time-frequency resource may also be referred to as: the terminal device determines a target uplink configuration grant associated with the DL SPS.

S405: the network device determines the target uplink configuration grant associated with the first time-frequency resource. The network device determining a target uplink configuration grant associated with the first time-frequency resource may also be referred to as: the network device determines a target uplink configuration grant associated with the DL SPS.

S406: the terminal device communicates with the network device on a second time-frequency resource. And the second time-frequency resource is a time-frequency resource determined according to the target uplink configuration authorization.

Specifically, when the first downlink data is decoded correctly, the terminal device sends first uplink data to the network device on the second time-frequency resource, and does not send acknowledgement of the first downlink data to the network device, where the first uplink data is transmitted in an uplink configuration authorization manner. And when the first downlink data decoding error occurs, the terminal equipment does not send negative acknowledgement of the first uplink data and the first downlink data to the network equipment. Correspondingly, when the network equipment successfully detects the first uplink data, the first downlink data is determined to be successfully decoded by the terminal equipment. And when the first uplink data is not successfully detected, determining that the first downlink data is not successfully decoded by the terminal equipment. It should be noted that, when the network device successfully decodes the first uplink data, it may be considered that the first uplink data is successfully detected. When the network device fails to decode the first uplink data, it may be considered that the first uplink data is not successfully detected. Alternatively, the first uplink data may be considered to be successfully detected when the demodulation signal-to-noise ratio of the first uplink data is greater than or equal to the first threshold. When the demodulation signal-to-noise ratio of the first uplink data is smaller than the first threshold, the first uplink data is not detected successfully.

As can be seen from the above, in the embodiment of the present application, the terminal device receives the downlink data on the first time-frequency resource, determines the target uplink configuration grant associated with the first time-frequency resource from the configured plurality of uplink configuration grants, and uses the associated target uplink configuration grant to communicate with the network device. Further, when the decoding of the downlink data is correct, the uplink data is directly triggered to be sent in a configuration authorization mode in the target uplink configuration authorization, and ACK is not fed back any more. The HARQ feedback information is implicitly indicated by using the configuration grant to carry out uplink data transmission, so that the signaling overhead of HARQ feedback can be reduced, the communication delay is reduced, and the service quality is ensured.

Note that the order of execution in S401 to S406 in fig. 4 is merely an exemplary illustration, and is not a limitation of the present application. For example, S404 may be performed before S405, S404 may be performed after S405, or S404 and S405 may be performed simultaneously.

Example one

The first configuration information in fig. 4 described above may include a first Identification (ID) that may be used to identify the DL SPS. In particular, the first identifier may also be referred to as a first configuration identifier.

One specific implementation of S404 may be: and the terminal equipment determines a second identifier meeting the first preset rule with the first identifier in the second configuration information. The second identifier may also be referred to as a second configuration identifier. And the terminal equipment determines the uplink configuration authorization corresponding to the second identifier as a target uplink configuration authorization. The first preset rule may be: the first identifier is the same as the second identifier; or the first mark and the second mark are in a multiple relation; alternatively, the result of the first identifier relative to the first value is the same as the result of the second identifier relative to the second value; alternatively, the first identifier and the second identifier are binary sequences, and the first identifier is inverted by bits and is identical to the second identifier. The first value is predefined, or preconfigured. The result of the first identifier relative to the first value may specifically be a result obtained by performing modulo, surplus or quotient taking on the first identifier and the first value, and operating the first identifier. The second value is predefined or preconfigured, and the result of the second identifier relative to the second value may specifically be a result obtained by performing modulo, remainder or quotient taking on the second identifier and the second value. The first value and the second value may be equal or unequal. It is to be understood that the first preset rule is only exemplary and not limiting.

The second configuration information may include N configuration information, specifically, N uplink configuration grants are configured as described in S402. The terminal device may obtain the first identifier from the first configuration information. And then searching a second identifier which meets the first preset rule with the first identifier in N pieces of configuration information in the second configuration information. And finally, taking the uplink configuration authorization corresponding to the second identifier as a target uplink configuration authorization.

One specific implementation of S405 may be: the network equipment determines a second identifier which meets a first preset rule with the first identifier; and the network equipment determines the uplink configuration authorization corresponding to the second identifier as a target uplink configuration authorization.

In the embodiment of the present application, the "identifier" is referred to as "configuration identifier", the "first configuration information" is referred to as "configuration information of DL SPS", the "uplink configuration grant" is referred to as "UL GF", and the "association relationship between the first time-frequency resource and the target uplink configuration grant" is referred to as "association relationship between DL SPS and target UL GF" for example, and the above process is described in detail.

The configuration information of the DL SPS includes a parameter, which may be a configuration identifier that is used to distinguish the current DL SPS from other DL SPS. The second configuration information includes configuration information of N UL GFs, and each of the configuration information of the N UL GFs includes a parameter, where the parameter may be a configuration identifier, and the configuration identifier is used to distinguish the current UL GF from other UL GFs. If the configuration identifier of the DL SPS and the configuration identifier of one UL GF satisfy the first preset rule, it may be determined that an association relationship exists between the DL SPS and the UL GF.

The following description will take the example that the DL SPS configuration identifier is the same as the UL GF configuration identifier. The network equipment is assumed to configure 1 DL SPS and two UL GF for the terminal equipment, and the configuration information of the DL SPS comprises a configuration identifier with a value of 1. The two UL GFs are a first UL GF and a second UL GF, respectively. The configuration information of the first UL GF comprises a configuration identifier with a value of 1; the configuration information of the second UL GF includes a configuration identifier having a value of 2. Since the configuration identifier of the DL SPS is the same as the configuration identifier of the first UL GF, it may be determined that there is an association relationship between the DL SPS and the first UL GF. Accordingly, the network device and the terminal device may utilize the first UL GF for closed loop data transmission.

In this example, the terminal device may determine, according to the configuration identifier, a target uplink configuration grant having an association relationship with the DL SPS, so as to omit a process of sending uplink scheduling signaling, save control signaling overhead, reduce transmission delay, and improve system reliability of closed loop transmission.

Example two

The first configuration information in fig. 4 may include a third identifier, where the third identifier is used to identify the target uplink configuration grant. The third identity may also be referred to as a configuration identity.

One specific implementation of S404 may be: and the terminal equipment determines a target uplink configuration authorization associated with the first time-frequency resource according to the third identifier.

One specific implementation of S405 may be: and the network equipment determines a target uplink configuration authorization associated with the first time-frequency resource according to the third identifier.

For example, the network device may allocate an identifier to each of N uplink configuration grants, where the identifier is used to identify the corresponding uplink configuration grant, and the N uplink configuration grants collectively correspond to the N identifiers. And the network equipment determines a target uplink configuration authorization with an association relation with the downlink semi-persistent scheduling, and acquires an identifier corresponding to the target uplink configuration authorization, namely the third identifier. And finally, placing the third identifier in the first configuration information of the downlink semi-persistent scheduling. Optionally, the first configuration information may further include a first identifier, where the first identifier is used to identify downlink semi-persistent scheduling. And finally, the first configuration information is sent to the terminal equipment through a high-layer signaling. Correspondingly, after obtaining the first configuration information, the terminal device may obtain the third identifier from the first configuration information, and determine that the uplink configuration authorization identified by the third identifier is the target uplink configuration authorization.

In the embodiment of the application, the terminal equipment can determine the target uplink configuration authorization corresponding to the DL SPS according to the third identifier, so that the process of sending uplink scheduling signaling for uplink data corresponding to the DL SPS is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

Example three

The first configuration information in fig. 4 may include a first transmission period of downlink data, where the first transmission period specifically is: and when the network equipment sends downlink data to the terminal equipment in a DL SPS mode, the transmission period of the downlink data is shortened. The second configuration information may include N configuration authorized configuration information, where each configuration authorized configuration information includes a transmission period of uplink data. If the transmission period of the uplink data in the configuration information of the first transmission period and one configuration grant meets a second preset rule, determining that an association relationship exists between the DL SPS and the configuration grant. Correspondingly, the transmission period of the uplink data authorized by the configuration is recorded as a second transmission period.

One specific implementation of S404 may be: the terminal equipment determines a second transmission period which meets a second preset rule with the first transmission period in the second configuration information; and the terminal equipment determines the uplink configuration authorization corresponding to the second transmission period as the target uplink configuration authorization. For example, the second preset rule may be that the first transmission period is the same as the second transmission period, or the first transmission period and the second transmission period have a multiple relationship, where the multiple may be an integer multiple or a non-integer multiple, and is not limited. For a more detailed description of the second preset rules reference is made to the definition of the first preset rules before.

One specific implementation of S405 may be: the network equipment determines a second transmission period which meets a second preset rule with the first transmission period in the second configuration information; and the network equipment determines the uplink configuration authorization corresponding to the second transmission period as the target uplink configuration authorization.

Specifically, the following description will take the second preset rule as an example that the first transmission period and the second transmission period have the same value. For example, the network device configures the terminal device with 1 DL SPS and two configuration grants, and the transmission period of data of the DL SPS is 10 slots. The second configuration information comprises configuration information of two configuration authorizations, namely configuration information of the first configuration authorizations and configuration information of the second configuration authorizations. Wherein, the transmission period of the data of the first configuration authorization is 10 time slots; the transmission period of the data of the second configuration grant is 20 slots. Since the transmission period of the data of the DL SPS is the same as the transmission period of the data of the first configuration grant, it may be determined that the DL SPS has an association relationship with the first configuration grant. Correspondingly, the first configuration authorization is the target configuration authorization, and the transmission period of the data of the first configuration authorization is the second transmission period.

It can be appreciated that in this example, in addition to determining the association relationship between the downstream semi-persistent scheduling and the target upstream configuration grant using the transmission period of the data. The association relationship between the two can also be determined by using the HARQ process number, redundancy version and the like in the configuration information.

For example, the first configuration information in fig. 4 includes a first HARQ process number of the downlink data, where the first HARQ process number is specifically: when the network equipment sends downlink data to the terminal equipment in a DL SPS mode, HARQ process numbers used by the downlink data are used. The second configuration information may include N configuration authorized configuration information, where each configuration authorized configuration information includes an HARQ process number of uplink data. If the first HARQ process number and the HARQ process number of the uplink data in the configuration information of the configuration grant satisfy a third preset rule, it may be determined that an association relationship exists between the DL SPS and the configuration grant. Correspondingly, the HARQ process number used by the uplink data of the configuration grant is recorded as a second HARQ process number.

One specific implementation of S404 may be: the terminal equipment determines a second HARQ process number meeting a third preset rule with the first HARQ process number in second configuration information; the terminal equipment determines the uplink configuration grant corresponding to the second HARQ process number as a target uplink configuration grant. The third preset rule may be: the first HARQ process number is the same as the second HARQ process number. Alternatively, the first HARQ process number and the second HARQ process number are in a multiple relationship, where the multiple may be an integer multiple or a non-integer multiple, and is not limited. For a more detailed description of the third preset rules reference is made to the definition of the first preset rules before.

One specific implementation of S405 may be: the network equipment determines a second HARQ process number meeting a third preset rule with the first HARQ process number in second configuration information; the network device determines that the uplink configuration grant corresponding to the second HARQ process number is the target uplink configuration grant.

Specifically, the following description will take the third preset rule as an example that the first HARQ process number and the second HARQ process number have the same value. For example, the network device configures the terminal device with 1 DL SPS and two configuration grants, and the HARQ process number adopted by the DL SPS is 1. The second configuration information comprises configuration information of two configuration authorizations, namely configuration information of the first configuration authorizations and configuration information of the second configuration authorizations. Wherein, the HARQ process number of the first configuration authorization is 1; the HARQ process number of the second configuration grant is 0. Since the HARQ process number of the DL SPS is the same as the HARQ process number of the first configuration grant, it may be determined that the DL SPS has an association relationship with the first configuration grant. Correspondingly, the first configuration grant is the target configuration grant, and the HARQ process number of the first configuration grant is the second HARQ process number.

For example, the first configuration information in fig. 4 includes a first redundancy version of the downlink data, where the first redundancy version is specifically: and when the network equipment sends downlink data to the terminal equipment in a DL SPS mode, the redundancy version adopted by the downlink data is adopted. The second configuration information may include N configuration authorized configuration information, where each configuration authorized configuration information may include a redundancy version of uplink data. If the first redundancy version and the redundancy version of the uplink data in the configuration information in one configuration grant satisfy the fourth preset rule, it may be determined that an association relationship exists between the DL SPS and the configuration grant. Correspondingly, the redundancy version of the uplink data of the configuration grant is recorded as a second redundancy version.

One specific implementation of S404 may be: the terminal equipment determines a second redundancy version which meets a fourth preset rule with the first redundancy version in the second configuration information; and the terminal equipment determines the uplink configuration authorization corresponding to the second redundancy version as the target uplink configuration authorization. For example, the fourth predetermined rule may be that the first redundancy version is identical to the second redundancy version. For a more detailed description of the fourth preset rules reference is made to the definition of the first preset rules before.

One specific implementation of S405 may be: the network equipment determines a second redundancy version which meets a fourth preset rule with the first redundancy version in second configuration information; and the network equipment determines the uplink configuration grant corresponding to the second redundancy version as a target uplink configuration grant.

Specifically, the fourth preset rule is the same as the first redundancy version and the second redundancy version, which is described below. For example, the network device configures the terminal device with 1 DL SPS, the redundancy version of which is redundancy version 1, and two configuration grants. The second configuration information comprises configuration information of two configuration authorizations, namely configuration information of the first configuration authorizations and configuration information of the second configuration authorizations. Wherein the redundancy version of the first configuration grant is 1 and the redundancy version of the second configuration grant is 0. Since the redundancy version of the DL SPS is the same as that of the first configuration grant, it may be determined that the DL SPS has an association relationship with the first configuration grant. Correspondingly, the first configuration grant is the target configuration grant, and the redundancy version of the first configuration grant is the second redundancy version.

In the embodiment of the application, the terminal equipment can determine the target uplink configuration authorization corresponding to the DL SPS according to the transmission period, the HARQ process number or the redundancy version of the data, so that the process of sending uplink scheduling signaling for the uplink data corresponding to the DL SPS is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

Example four

The first configuration information in fig. 4 may include a first time domain offset, where the value of the first time domain offset is assumed to be P, P is a real number, and a unit of P may be a time domain symbol, a time slot, a subframe, a radio frame, or the like. In this application, the unit of the first time domain offset is described by taking a time domain symbol as an example.

One specific implementation of S404 may be: the terminal equipment determines a second time unit according to a first time unit and the first time domain offset, wherein the first time unit is a time unit corresponding to the first time-frequency resource, and the second time unit is a time unit corresponding to the second time-frequency resource. The terminal device may determine that the uplink configuration grant corresponding to the second time unit is the target uplink configuration grant.

Specifically, the terminal device may determine the first time-frequency resource for receiving first downlink data. And determining a first time unit in a time domain according to the first time-frequency resource. And determining a second time unit according to the first time unit and the first time domain offset in the first configuration information. For example, the first time unit is used as a reference, and the second time unit is obtained by shifting according to the first time domain shift.

One specific implementation of S405 may be: the network device determines a second time unit based on the first time unit and the first time domain offset. The network device may determine that the uplink configuration grant corresponding to the second time unit is the target uplink configuration grant.

Assume that the network device configures two uplink configuration grants for the terminal device, UL gf#1 and UL gf#2, respectively. The time domain resource of the first uplink data in UL gf#1 and the time domain resource of the downlink data in DL SPS differ by p1 time domain symbols. The time domain resource of the first transmittable uplink data in UL gf#2 is different from the time domain resource of the downlink data in DL SPS by p2 time domain symbols. If the first time domain offset in the first configuration information has a value of p2, the terminal device may determine that the target uplink configuration grant associated with the DL SPS is UL gf#2. If the value of the first time domain offset in the first configuration information is p1, the terminal device may determine that the target uplink configuration grant associated with the DL SPS is UL gf#1. Wherein p1 and p2 are both real numbers.

In the embodiment of the application, the terminal equipment can determine the target uplink configuration authorization associated with the DL SPS according to the first time domain offset in the first configuration information, so that the process of sending uplink scheduling signaling for uplink data corresponding to the DL SPS is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

Example five

The first configuration information in fig. 4 may include a first frequency domain offset, and the unit of Q may be RE, REG, RB or RBG, assuming that the value of the first frequency domain offset is Q, and Q is a real number. In this application, the unit of the first frequency domain offset is described by taking RB as an example.

One specific implementation of S404 may be: the terminal equipment determines a second frequency domain unit according to the first frequency domain unit and the first frequency domain offset, wherein the first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource. The terminal equipment determines that the uplink configuration authorization corresponding to the second frequency domain unit is the target uplink configuration authorization. Specifically, the terminal device may determine a first time-frequency resource for transmitting the first downlink data. A first frequency domain unit is determined on the frequency domain based on the first time-frequency resource. A second frequency domain unit is determined based on the first frequency domain unit and the first frequency domain offset. For example, the first frequency domain unit may be used as a reference, and the second frequency domain unit may be obtained by shifting according to the first frequency domain shift.

One specific implementation of S405 may be: the network device determines a second frequency domain unit based on the first frequency domain unit and the first frequency domain offset. The network equipment determines that the uplink configuration authorization corresponding to the second frequency domain unit is the target uplink configuration authorization.

Assume that the network device configures two uplink configuration grants for the terminal device, UL gf#1 and UL gf#2, respectively. The frequency domain resource for transmitting uplink data on UL gf#1 is different from the frequency domain resource for transmitting downlink data in the first DL SPS by q1 RBs. The frequency domain resource for transmitting uplink data on UL gf#2 differs from the frequency domain resource for transmitting downlink data in DL SPS by q2 RBs. If the value of the first frequency domain offset in the first configuration information is q1, the target uplink configuration grant associated with DL SPS is UL gf#1. If the value of the first frequency domain offset in the first configuration information is q2, the target uplink configuration grant associated with DL SPS is UL gf#2. Wherein q1 and q2 are both real numbers.

In the embodiment of the application, the terminal equipment can determine the target uplink configuration authorization associated with the DL SPS according to the first frequency domain offset in the first configuration information, so that the process of sending uplink scheduling signaling for uplink data corresponding to the DL SPS is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

Example six

The first configuration information in fig. 4 may include a first time domain offset and a first frequency domain offset. Assume that the first frequency domain offset takes the value P, the first frequency domain offset takes the value Q, and P and Q are real numbers.

One specific implementation of S404 may be: the terminal equipment determines a second time unit according to the first time unit and the first time domain offset. The first time unit is a time unit corresponding to the first time-frequency resource, and the second time unit is a time unit corresponding to the second time-frequency resource. The terminal equipment determines a second frequency domain unit according to a first frequency domain unit and a first frequency domain offset, wherein the first frequency domain unit is a frequency domain unit corresponding to a first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to a second time-frequency resource; and the terminal equipment determines the uplink configuration authorization corresponding to the second time-frequency resource as the target uplink configuration authorization.

One specific implementation of S405 may be: the network equipment determines a second time unit according to the first time unit and the first time domain offset; the network device determines a second frequency domain unit based on the first frequency domain unit and the first frequency domain offset. And the terminal equipment determines the uplink configuration authorization corresponding to the second time-frequency resource as the target uplink configuration authorization. The second time-frequency resource corresponds to a second time unit in the time domain and corresponds to a second frequency-domain unit in the frequency domain.

Assume that the network device configures two uplink configuration grants for the terminal device, UL gf#1 and UL gf#2, respectively. The time domain resource for transmitting uplink data in UL gf#1 and the time domain resource for transmitting downlink data in DL SPS differ by p1 time domain symbols, and the frequency domain resource for transmitting uplink data in UL gf#1 and the frequency domain resource for transmitting downlink data in DL SPS differ by q1 RB. The time domain resource for transmitting uplink data in UL GF#2 is different from the time domain resource for transmitting downlink data in DL SPS by p2 time domain symbols, and the frequency domain resource for transmitting uplink data in UL GF#2 is different from the frequency domain resource for transmitting downlink data in DL SPS by q2 RBs. If the value of the first time domain offset in the first configuration information is p2 and the value of the first frequency domain offset is q2, the target uplink configuration grant associated with the DL SPS is UL gf#2. If the value of the first time domain offset in the first configuration information is p1 and the value of the first frequency domain offset is q1, the target uplink configuration grant associated with DL SPS is UL gf#1. Wherein p1, p2, q1 and q2 are all real numbers.

In the embodiment of the application, the terminal equipment can determine the target uplink configuration authorization associated with the DL SPS according to the first time domain offset and the first frequency domain offset in the first configuration information, so that the process of sending uplink scheduling signaling for uplink data corresponding to the DL SPS is omitted, the control signaling overhead is saved, the transmission delay is reduced, and the system reliability of closed loop transmission is improved.

In the embodiment of the present application, an association relationship between one DL SPS and one uplink configuration grant is set up as an example. It can be understood that, by using the method shown in the flow of fig. 4, an association relationship between a DL SPS and a plurality of uplink configuration grants can be also established. Correspondingly, the number of the target uplink configuration grants in the flow of fig. 4 is multiple. For example, one specific implementation may be: the first configuration information includes three time domain offsets p1, p2, and p3, respectively, and the terminal device may determine the p1 st time domain symbol, the p2 nd time domain symbol, and the p3 rd time domain symbol after transmitting DL SPS PDSCH, where the UL GF corresponding to the p1 st time domain symbol is associated with the DL SPS. Alternatively, one specific implementation may be: the first configuration information includes a frequency domain offset q1, and a fourth identification for identifying a first UL GF associated with the DL SPS. After receiving the first configuration information, the terminal device may determine the first UL GF according to the fourth identifier, and determine the second UL GF according to the frequency domain offset q 1. The DL SPS is associated with a first UL GF and a second UL GF. In the embodiment of the present application, when an association relationship between one DL SPS and a plurality of uplink configuration grants is established, a closed-loop application of one downlink transmission and a plurality of uplink transmissions may be formed.

Or, by using the method shown in the flow of fig. 4, the association relationship between multiple DL SPS and one target uplink configuration grant may be established. Correspondingly, the number of DL SPS in the flow of fig. 4 is multiple. For example, when the network device transmits DL SPS PDSCH on multiple time-frequency resources, the multiple time-frequency resources correspond to the same UL GF. And the terminal equipment transmits the UL GF PUSCH on the time-frequency resource corresponding to the UL GF. For example, it is assumed that DL sps#1, DL sps#2, and DL sps#3 have an association relationship with UL gf#1. When the network device transmits PDSCH on DL sps#1, DL sps#2, DL sps#3, the terminal device transmits PUSCH on UL gf#1. In the embodiment of the present application, when association between multiple DL SPS and one UL GF is established, a closed loop application of multiple downlink transmissions and one uplink transmission may be formed.

The embodiment of the application provides an application scenario, when the method of the embodiment of the application is adopted, the association relation between one DL SPS and one UL GF is established, or the association relation between a plurality of DL SPSs and one UL GF is established, or the association relation between one DL SPS and a plurality of UL GF is established, and then the UL GF with the association relation is only used for closed loop uplink transmission and cannot be used for other uplink transmission.

For example, in the embodiment of the present application, a closed loop application is provided, in which DL SPS is used for downlink transmission, GB is used for uplink transmission, and HARQ feedback is sent. As shown in fig. 5, a complete closed loop application process may include: the network device transmits downlink data to the terminal device, which may be transmitted in the SPS PDSCH. And after receiving the downlink data, the terminal equipment sends HARQ feedback to the network equipment. Specifically, if the downlink data is decoded correctly, the HARQ feedback is ACK. If the downlink data is decoded incorrectly, the HARQ feedback is NACK. The network equipment sends uplink scheduling (UL-Grant) to the terminal equipment, the terminal equipment sends uplink data to the network equipment according to the uplink scheduling of the network equipment, and the uplink data can be sent in a PUSCH.

As can be seen from the above description, in the closed-loop application of the above example, a complete closed-loop application procedure includes "downlink data, HARQ feedback, uplink grant, and uplink data". The whole closed loop application has more interaction, larger signaling overhead and high communication time delay.

By way of example, using the communication method provided in fig. 4, a closed loop application is provided, in which downlink transmission is performed using DL SPS, uplink transmission is performed using target uplink configuration grant, and a link for transmitting HARQ feedback is skipped. As shown in fig. 6, a complete closed loop application process may include: the network device sends downlink data to the terminal device, the downlink data is transmitted by adopting a DL SPS mode, and the downlink data can be sent in the PDSCH. After receiving the downlink data, the terminal device sends uplink data to the network device if the downlink data is decoded correctly. If the downlink data is decoded in error, the uplink data is not sent to the network equipment. The uplink data can be transmitted in a standard uplink configuration authorization mode, and the uplink data can be sent in a PUSCH.

In the embodiment of the present application, comparing the closed loop application shown in fig. 5 with the closed loop application shown in fig. 6, it can be found that: in the closed-loop application shown in fig. 5, 4 interactions are needed between the network device and the terminal device, while in the closed-loop application shown in fig. 6, only 2 interactions are needed between the network device and the terminal device, so that the communication delay is reduced, and the reliability of the service is ensured. Meanwhile, in the closed loop application shown in fig. 6, the signaling such as HARQ feedback, uplink scheduling and the like is not required to be sent, so that signaling overhead is saved.

As shown in fig. 7, the embodiment of the present application provides a flowchart of a communication method, where the communication method may be performed by a terminal device and a network device, or may be performed by a chip in the terminal device and a chip in the network device. The network device in fig. 7 may be access network device 120 in fig. 1 and the terminal device may be terminal device 110 in fig. 1. The method as shown in fig. 7 includes the following operations.

S700: the network device sends fourth configuration information to the terminal device, wherein the fourth configuration information indicates transmission parameters of downlink data. Correspondingly, the terminal equipment receives fourth configuration information.

The fourth configuration information may include first type information, i.e., PDSCH related information. The first type of information includes one or more of the following parameters: frequency domain resource indication information, time domain resource indication information, a mapping type of virtual resource blocks to physical resource blocks, physical resource block bundling size, MCS, new data indication, redundancy version, initialization information of demodulation reference signals, antenna port number, carrier indication information, bandwidth part indication information or transmission configuration indication (transmission configuration indication, TCI). The fourth configuration information may further include a second type of information, where the second type of information includes one or more of the following parameters: hybrid automatic repeat request, HARQ process number or data allocation information, etc.

S701: and the network equipment sends the PDSCH to the terminal equipment according to the transmission parameters of the downlink data, wherein the PDSCH comprises control information. Correspondingly, the terminal equipment receives the PDSCH according to the transmission parameters of the downlink data.

The control information may include a third type of information, i.e., PUSCH-related information. The third type of information may include one or more of the following parameters: carrier indication information, bandwidth part indication information, frequency domain resource indication information, time domain resource indication information, frequency domain frequency hopping indication, MCS, new data indication, redundancy version, hybrid automatic repeat request HARQ process number, precoding information layer number, power control information of PUSCH, antenna port information, SRS resource indication information, SRS request information, channel state measurement information trigger or new data indication and the like. If the fourth configuration information in S800 includes the second type information, the control information in S801 may not include the second type information. If the fourth configuration information in S800 does not include the second type information, the control information in S801 includes the second type information.

Specifically, in S800 above, the network device may send the fourth configuration information to the terminal device through higher layer signaling. Correspondingly, the terminal device can determine the relevant parameters received by the PDSCH according to the fourth configuration information in S800, and the network device does not need to additionally send the scheduling information for scheduling the PDSCH relative to the manner that the terminal device determines the relevant parameters received by the PDSCH according to the scheduling of the network device, thereby reducing signaling overhead, reducing communication delay and guaranteeing service quality.

S702: if the terminal equipment decodes the PDSCH correctly, the PUSCH is sent to the network equipment according to the control information included in the PDSCH, and ACK feedback information is not sent to the network equipment any more.

In the embodiment of the present application, the terminal device may send the PUSCH to the network device according to the control information embedded in the PDSCH. Compared with the mode that the terminal equipment sends the PUSCH according to the dispatching of the PDCCH, the signaling overhead can be reduced. Meanwhile, the data information and the control information in the PDSCH are subjected to joint coding, so that the transmission efficiency is further improved.

S703: if the terminal equipment decodes the PDSCH in error, the PUSCH and NAKC feedback information are not sent to the network equipment.

For the operation of the terminal device in S702 and S703, the network device may perform detection of PUSCH. If the network equipment successfully detects the PUSCH, the network equipment determines that the decoding of the PDSCH by the terminal equipment is successful. If the network equipment does not successfully detect the PUSCH, determining that the decoding of the PUDSCH by the terminal equipment is unsuccessful.

As can be seen from the above, in the embodiment of the present application, when the PDSCH is decoded correctly, uplink data transmission of the PUSCH is directly triggered, and AKC is not fed back. The HARQ feedback information is implicitly indicated through uplink data transmission, so that the signaling overhead of HARQ feedback is reduced, the communication delay is reduced, and the service quality is ensured.

Optionally, before S700 above, the method may further include: the terminal device detects the DMRS. If DMRS is detected, the terminal device performs the step of receiving fourth configuration information in S700. Otherwise, the flow is ended.

When the flow shown in fig. 7 is applied to a closed loop application, a complete closed loop application process may include: the network equipment transmits a PDSCH to the terminal equipment, wherein the control information of the PDSCH is embedded with the control information of the PUSCH. And the terminal equipment sends the PUSCH to the network equipment according to the control information of the PUSCH. In the whole closed loop application process, only the transmission of the PDSCH and the PUSCH is needed, the uplink scheduling and the HARQ feedback are not needed to be sent, the signaling overhead is saved, the transmission delay is reduced, and the service reliability is ensured.

As shown in fig. 8, the embodiment of the present application provides a flowchart of a communication method, which may be performed by a terminal device and a network device, or may be performed by a chip in the terminal device and a chip in the network device. The network device in fig. 8 may be access network device 120 in fig. 1 and the terminal device may be terminal device 110 in fig. 1. The method shown in fig. 8 includes the following operations.

S800: the network device sends the first configuration information to the terminal device. Correspondingly, the terminal equipment receives the first configuration information.

S801: the network device sends the second configuration information to the terminal device. Correspondingly, the terminal equipment receives the second configuration information. The first configuration information and the second configuration information are described in the flow shown in fig. 4, and will not be described here.

S802: and the terminal equipment determines the association relation between the DL SPS and the target uplink configuration authorization according to the first configuration information or according to the first configuration information and the second configuration information. For a specific implementation of S802, see the relevant description of S404.

S803: and the network equipment determines the association relation between the DL SPS and the target uplink configuration authorization according to the first configuration information or according to the first configuration information and the second configuration information. For a specific implementation procedure of S803, see the relevant description of S405.

S804: and the terminal equipment performs data transmission with the network equipment according to the association relation between the downlink semi-persistent scheduling and the target uplink configuration authorization. For the specific implementation procedure of S804, reference may be made to the relevant descriptions of S403 and S406.

Optionally, S800 and S801 may be replaced by: the network device transmits the third configuration information. Correspondingly, the terminal equipment receives the third configuration information. The third configuration information is used for configuring the association relation between the downlink semi-persistent scheduling and the target uplink configuration authorization. Correspondingly, S802 may be replaced by: and the terminal equipment determines the association relation between the DL SPS and the target uplink configuration authorization according to the third configuration information. Assuming that there are N uplink configuration grants, N is a positive integer, the network device may determine that there is an association between the downlink semi-persistent scheduling and the ith uplink configuration grant, where i is a positive integer less than or equal to N. The network device may configure the association relationship between the downlink semi-persistent scheduling and the ith uplink configuration grant to the terminal device through the third configuration information.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the perspective of the network device, the terminal device, and the interaction between the network device and the terminal device, respectively. In order to implement the functions in the methods provided in the embodiments of the present application, the network device and the terminal device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

Fig. 9 and 10 are schematic structural diagrams of possible communication devices according to embodiments of the present application. These communication devices can implement the functions of the terminal device or the network device in the above method embodiment, so that the beneficial effects of the above method embodiment can also be implemented. In this embodiment of the present application, the communication device may be a terminal device 110 as shown in fig. 1, or may be an access network device 120 as shown in fig. 1, or may be a module (such as a chip) applied to a terminal device or an access network device.

As shown in fig. 9, the communication apparatus 900 includes a transceiver module 901 and a processing module 902. The communication device 900 may be used to implement the functions of the terminal device or the network device in the method embodiments shown in fig. 4, fig. 7, or fig. 8.

When the communication device 900 is used to implement the functions of the terminal device in the embodiment of the method described in fig. 4: the transceiver module 901 is configured to receive first configuration information and second configuration information from a network device, where the first configuration information is used to configure resources for downlink semi-persistent scheduling, and the second configuration information is used to configure N uplink configuration grants, and N is an integer greater than 1. The transceiver module 901 is further configured to receive first downlink data on a first time-frequency resource, where the first downlink data is transmitted using a downlink semi-persistent scheduling manner, and the first time-frequency resource is determined according to the downlink semi-persistent scheduling resource. A processing module 902, configured to determine a target uplink configuration grant associated with the first time-frequency resource, where the target uplink configuration grant is one of the N uplink configuration grants. And a processing module 902, configured to control the transceiver module 901 to communicate with the network device on a second time-frequency resource, where the second time-frequency resource is a time-frequency resource determined according to the target uplink configuration grant.

When the communication apparatus 900 is used to implement the functions of the network device in the embodiment of the method described in fig. 4: a transceiver module 901, configured to send the first configuration information and the second configuration information to a terminal device; the first configuration information is used for configuring downlink semi-persistent scheduling resources, the second configuration information is used for configuring N uplink configuration grants, and N is an integer greater than 1. The transceiver module 901 is further configured to send first downlink data on a first time-frequency resource, where the first downlink data is transmitted using a downlink semi-persistent scheduling manner, and the first time-frequency resource is determined according to the downlink semi-persistent scheduling resource; a processing module 902, configured to determine a target uplink configuration grant associated with the first time-frequency resource, where the target uplink configuration grant is one of the N uplink configuration grants; the processing module 902 is further configured to control the transceiver module 901 to communicate with the terminal device on a second time-frequency resource, where the second time-frequency resource is a time-frequency resource determined according to the target uplink configuration grant.

When the communication device 900 is used to implement the functions of the terminal device in the embodiment of the method described in fig. 7: the transceiver module 901 is configured to receive fourth configuration information sent by a network device, where the fourth configuration information indicates a transmission parameter of downlink data. And the processing module 902 is configured to receive a PDSCH according to a transmission parameter of the downlink data, where the PDSCH carries PUSCH control information. The transceiver module 901 is further configured to control the transceiver module 901 to send PUSCH to the network device according to the control information when PDSCH decoding is correct, and control the transceiver module 901 not to send ACK feedback information to the network device. Or, when the PDSCH is decoded in error, the control transceiver module 901 does not send PUSCH and NACK feedback information to the network device any more.

When the communication apparatus 900 is used to implement the functions of the network device in the embodiment of the method described in fig. 7: the transceiver module 901 is configured to send fourth configuration information to the terminal device, where the fourth configuration information indicates a transmission parameter of downlink data. And the processing module 902 is configured to control the transceiver module 901 to send the PDSCH to the terminal device according to the transmission parameters of the downlink data. Optionally, the processing module 902 is further configured to determine that the PUSCH is successfully decoded by the terminal device when the PDSCH is successfully detected, or determine that the PUSCH is not successfully decoded by the terminal device.

When the communication device 900 is used to implement the functions of the terminal device in the embodiment of the method described in fig. 8: the transceiver module 901 is configured to receive the first configuration information and the second configuration information sent by the network device. And a processing module 902, configured to determine an association relationship between the DL SPS and the target uplink configuration grant according to the first configuration information or according to the first configuration information and the second configuration information. The processing module 902 is further configured to perform data transmission with the network device according to the association relationship between the DL SPS and the target uplink configuration grant.

When the communication apparatus 900 is used to implement the functions of the network device in the embodiment of the method described in fig. 8: the transceiver module 901 is configured to send the first configuration information and the second configuration information to the terminal device. And a processing module 902, configured to determine an association relationship between the DL SPS and the target uplink configuration grant according to the first configuration information or according to the first configuration information and the second configuration information. And the processing module 902 is further configured to perform data transmission with the terminal device according to the association relationship between the DL SPS and the target uplink configuration grant.

For a more detailed description of the transceiver module 901 and the processing module 902, reference should be made to the relevant description of the method embodiments described above, which will not be described here.

As shown in fig. 10, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It is understood that interface circuit 1020 may be a transceiver or an input-output interface. Optionally, the communication device 1000 may further comprise a memory 1030 for storing instructions to be executed by the processor 1010 or for storing input data required by the processor 1010 to execute instructions or for storing data generated after the processor 1010 executes instructions.

When the communication device 1000 is used to implement the method in the method embodiment, the processor 1010 is configured to perform the functions of the processing module 902, and the interface circuit 1020 is configured to perform the functions of the transceiver module 901.

When the communication device is a chip applied to the terminal equipment, the terminal equipment chip realizes the functions of the terminal equipment in the embodiment of the method. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent to the terminal device by the network device; alternatively, the terminal device chip sends information to other modules (e.g., radio frequency modules or antennas) in the terminal device, which is sent by the terminal device to the network device.

When the communication device is a chip applied to the network equipment, the network equipment chip realizes the functions of the network equipment in the embodiment of the method. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent to the network device by the terminal device; alternatively, the network device chip sends information to other modules (e.g., radio frequency modules or antennas) in the network device, which the network device sends to the terminal device.

It is to be appreciated that the processor in embodiments of the present application may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (random access Memory, RAM), flash Memory, read-Only Memory (ROM), programmable ROM (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device or a terminal device. The processor and the storage medium may reside as discrete components in an access network device or terminal device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program or instructions may be stored in or transmitted across a computer-readable storage medium. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as DVD; but also semiconductor media such as Solid State Disks (SSDs).

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/", generally indicates that the associated object is an or relationship; in the formulas of the present application, the character "/" indicates that the front and rear associated objects are a "division" relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.

Claims

1. A method of communication in a closed loop application scenario, comprising:

receiving first configuration information from network equipment, wherein the first configuration information is used for configuring resources of downlink semi-persistent scheduling;

receiving second configuration information from the network device, wherein the second configuration information is used for configuring N uplink configuration authorizations, and N is an integer greater than 1;

Receiving first downlink data on a first time-frequency resource, wherein the first downlink data is transmitted in a downlink semi-persistent scheduling mode, and the first time-frequency resource is determined according to the downlink semi-persistent scheduling resource;

determining a target uplink configuration grant associated with the downlink semi-persistent scheduling, wherein the target uplink configuration grant is one of the N uplink configuration grants;

and communicating with the network equipment on a second time-frequency resource, wherein the second time-frequency resource is determined according to the target uplink configuration authorization.

2. The method of claim 1, wherein the first configuration information comprises a first identification identifying the downlink semi-persistent scheduling, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

determining a second identifier meeting a first preset rule with the first identifier in the second configuration information;

and determining the uplink configuration authorization corresponding to the second identifier as the target uplink configuration authorization.

3. The method of claim 1, wherein the first configuration information comprises a first transmission period of downlink data, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

Determining a second transmission period of uplink data meeting a second preset rule with the first transmission period in the second configuration information;

and determining the uplink configuration authorization corresponding to the second transmission period as the target uplink configuration authorization.

4. The method of claim 1, wherein the first configuration information comprises a third identification identifying the target uplink configuration grant, the determining the target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

and determining a target uplink configuration authorization associated with the downlink semi-persistent scheduling according to the third identifier.

5. The method of claim 1, wherein the first configuration information comprises a first time domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

determining a second time unit according to a first time unit and the first time domain offset, wherein the first time unit is a time unit corresponding to the first time-frequency resource, and the second time unit is a time unit corresponding to the second time-frequency resource;

and determining the uplink configuration authorization corresponding to the second time unit as the target uplink configuration authorization.

6. The method of claim 1, wherein the first configuration information comprises a first frequency domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

determining a second frequency domain unit according to a first frequency domain unit and the first frequency domain offset, wherein the first frequency domain unit is a frequency domain unit corresponding to the first time-frequency resource, and the second frequency domain unit is a frequency domain unit corresponding to the second time-frequency resource;

and determining that the uplink configuration grant corresponding to the second frequency domain unit is the target uplink configuration grant.

7. The method of claim 1, wherein the first configuration information comprises a first time domain offset and a first frequency domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

And determining that the uplink configuration grant corresponding to the second time-frequency resource is the target uplink configuration grant.

8. The method of any of claims 1 to 7, wherein the communicating with the network device on the second time-frequency resource comprises:

when the first downlink data is decoded correctly, sending first uplink data to the network equipment on the second time-frequency resource, and not sending a positive acknowledgement of the first downlink data to the network equipment, wherein the first uplink data is transmitted in an uplink configuration authorization mode; and/or the number of the groups of groups,

and when the first downlink data is decoded in error, not sending negative acknowledgement of the first uplink data and the first downlink data to the network equipment.

9. A method of communication in a closed loop application scenario, comprising:

transmitting first configuration information to terminal equipment, wherein the first configuration information is used for configuring downlink semi-persistent scheduling resources;

transmitting second configuration information to the terminal equipment, wherein the second configuration information is used for configuring N uplink configuration authorizations, and N is an integer greater than 1;

transmitting first downlink data on a first time-frequency resource, wherein the first downlink data is transmitted in a downlink semi-persistent scheduling mode, and the first time-frequency resource is determined according to the downlink semi-persistent scheduling resource;

and communicating with the terminal equipment on a second time-frequency resource, wherein the second time-frequency resource is determined according to the target uplink configuration authorization.

10. The method of claim 9, wherein the first configuration information comprises a first identifier, the first identifier being used to identify the downlink semi-persistent scheduling, the second configuration information comprises a second identifier, and the determining the target uplink configuration grant associated with the downlink semi-persistent scheduling comprises:

determining a second identifier meeting a first preset rule with the first identifier;

11. The method of claim 9, wherein the first configuration information comprises a first transmission period of downlink data, the second configuration information comprises a second transmission period of uplink data, and the determining the target uplink configuration grant associated with the downlink semi-persistent scheduling comprises:

determining the second transmission period meeting a second preset rule with the first transmission period;

12. The method of claim 9, wherein the first configuration information comprises a third identification identifying the target uplink configuration grant, the determining the target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

and determining a target uplink configuration authorization associated with the first time-frequency resource according to the third identifier.

13. The method of claim 9, wherein the first configuration information comprises a first time domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

14. The method of claim 9, wherein the first configuration information comprises a first frequency domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

15. The method of claim 9, wherein the first configuration information comprises a first time domain offset and a first frequency domain offset, the determining a target uplink configuration grant associated with the downlink semi-persistent scheduling comprising:

16. The method according to any of claims 9 to 15, wherein said communicating with said terminal device on a second time-frequency resource comprises:

and receiving first uplink data from the terminal equipment on the second time-frequency resource, wherein the first uplink data is transmitted in an uplink configuration authorization mode.

17. The method of claim 16, wherein,

when the first uplink data is successfully detected, determining that the first downlink data is successfully decoded by the terminal equipment; and/or the number of the groups of groups,

and when the first uplink data is not successfully detected, determining that the first downlink data is not successfully decoded by the terminal equipment.

18. A communication device in a closed loop application scenario, characterized by comprising means for performing the method of any of claims 1 to 8 or 9 to 17.

19. A communication device in a closed loop application scenario, comprising a processor and a communication interface for receiving signals from other communication devices than the communication device and transmitting or sending signals from the processor to the other communication devices than the communication device, the processor being configured to implement the method of any one of claims 1 to 8 or 9 to 17 by logic circuitry or executing code instructions.

20. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when run, implements the method of any one of claims 1 to 8 or 9 to 17.